Respostas

2013-11-25T10:02:29-02:00
x = 2y + 5
3 x + y = 29

x=2y+5
y=29-3x

x=2*(29-3x)+5
x=58-6x+5
x+6x=63
x=9 

y=29-3*9
y=29-27
y=2